Baby Names US
girls' name ★ peaked 1980

Siobhan

Gender Girl Rank 2025 #2,096 Trend ↑ Rising 96%

Anglicized spelling of Irish Siobhán, from Middle Irish Sibán, from Anglo-Norman Jehane or Jehanne, from Old French Jehanne, from Medieval Latin Johanna, variant of…

Rank 2025
#2,096
among girls · ↓157 vs 2024
Babies in 2025
90
named Siobhan · -13% vs 2024
How common
1 in 17,859
girls born in 2025
Peak year
1980
282 babies
All-time total
7,399
#1,998 all-time among girls
First recorded
1956
in Social Security records

Siobhan popularity over time

7,399 babies have been named Siobhan since 1956, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.050.10.150.218801900192019401960198020002020Peak 1979Girls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Per year Change Best rank
1880s – – – –
1890s – – – –
1900s – – – –
1910s – – – –
1920s – – – –
1930s – – – –
1940s – – – –
1950s 265 27 – #1,156
1960s 869 87 +228% #1,015
1970s 996 100 +15% #629
1980s 2,086 209 +109% #649
1990s 1,334 133 -36% #1,112
2000s 758 76 -43% #1,646
2010s 548 55 -28% #2,449
2020s (to 2025) 543 91 +65% #1,939

Where Siobhan is heading

A five-year projection from the recent trend in births per 1,000 girls (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 girls Implied rank
2026 100 0.06 outside top 500
2027 110 0.07 outside top 500
2028 119 0.07 outside top 500
2029 127 0.08 outside top 500
2030 135 0.08 outside top 500

Where Siobhan is most popular

Girls named Siobhan per 1,000 girls born in each state, 2021–2025. National average: 0.059 per 1,000. Strongest in Massachusetts, New York, and Virginia.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are girls named Siobhan born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Girls 2021–2025 Per 1,000 vs national
Massachusetts 20 0.165 +180%
New York 46 0.116 +97%
Virginia 18 0.106 +79%
Pennsylvania 24 0.102 +72%
Washington 10 0.069 +17%
Texas 44 0.055 -7%
New Jersey 9 0.050 -16%
California 40 0.048 -19%
Arizona 6 0.043 -28%
Illinois 7 0.031 -48%
Georgia 5 0.022 -63%
North Carolina 5 0.022 -63%
Ohio 5 0.021 -64%
Florida 5 0.012 -80%
Alaska – – –
Alabama – – –
Arkansas – – –
Colorado – – –
Connecticut – – –
District of Columbia – – –
Delaware – – –
Hawaii – – –
Iowa – – –
Idaho – – –
Indiana – – –
Kansas – – –
Kentucky – – –
Louisiana – – –
Maryland – – –
Maine – – –
Michigan – – –
Minnesota – – –
Missouri – – –
Mississippi – – –
Montana – – –
North Dakota – – –
Nebraska – – –
New Hampshire – – –
New Mexico – – –
Nevada – – –
Oklahoma – – –
Oregon – – –
Rhode Island – – –
South Carolina – – –
South Dakota – – –
Tennessee – – –
Utah – – –
Vermont – – –
Wisconsin – – –
West Virginia – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Siobhan

Siobhan is rare for girls in the United States, ranked #2,096 in 2025 with 90 babies given the name. It is currently rising compared with a decade ago.

Since 1956, 7,399 American babies have been named Siobhan. Its peak came in 1980, when 282 newborns received the name, the signature sound of the 1980s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Siobhan stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Siobhan?

The median living Siobhan is about 38 years old; half are between 25 and 46. An estimated 7,200 people named Siobhan are alive in the United States today.

median 38 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Siobhan year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank
2025 90 #2,096
2024 103 #1,939
2023 102 #1,943
2022 84 #2,248
2021 100 #1,967
2020 64 #2,656
2019 47 #3,377
2018 44 #3,553
2017 33 #4,366
2016 52 #3,179
2015 56 #3,055
2014 54 #3,107
2013 69 #2,592
2012 64 #2,766
2011 52 #3,217
2010 77 #2,449
2009 62 #2,849
2008 50 #3,371
2007 57 #3,090
2006 61 #2,884
2005 64 #2,668
2004 71 #2,421
2003 108 #1,754
2002 91 #1,953
2001 86 #1,993
2000 108 #1,646
1995 119 #1,389
1990 145 #1,183
1985 234 #740
1980 282 #649
1975 58 #1,671
1970 83 #1,303
1965 97 #1,067
1960 90 #1,154
1955 – –
1950 – –
1945 – –
1940 – –
1935 – –
1930 – –
1925 – –
1920 – –
1915 – –
1910 – –
1905 – –
1900 – –
1895 – –
1890 – –
1885 – –
1880 – –

Famous people named Siobhan

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Siobhan Finneran Siobhan Finneran British actress (born 1966) Contemporary
  2. 2 Siobhan Fallon Hogan Siobhan Fallon Hogan American actress (born 1961) Contemporary
  3. 3 Siobhan Chamberlain Siobhan Chamberlain English footballer, sports pundit, and commentator b. 1983 · Contemporary

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

Quick answers about Siobhan, drawn from the same Social Security data as the charts above.

How old is the average Siobhan?

The median living Siobhan is about 38 years old. Half of all living Siobhans are between 25 and 46 years old.

How many people named Siobhan are alive today?

An estimated 7,200 people named Siobhan are alive in the United States, based on 7,399 recorded births and Social Security life tables.

What does the name Siobhan mean?

Anglicized spelling of Irish Siobhán, from Middle Irish Sibán, from Anglo-Norman Jehane or Jehanne, from Old French Jehanne, from Medieval Latin Johanna, variant of Joanna, from Koine Greek Ἰωάννα (Iōánna), from Hebrew יוֹחָנָה…

How popular is the name Siobhan in 2025?

Siobhan ranked #2,096 among girls' names in the United States in 2025, with 90 babies given the name, according to Social Security Administration data.

How many people are named Siobhan?

7,399 babies have been named Siobhan in the United States since 1956, based on Social Security card applications.

When was the name Siobhan most popular?

Siobhan peaked in 1980, when 282 newborns received the name.

Is Siobhan a boy or girl name?

Siobhan is overwhelmingly a girl's name: 100% of babies with the name.

Is the name Siobhan rising or falling?

Siobhan is on the rise, noticeably more popular now than a decade ago.

Will Siobhan become more popular?

Siobhan is trending upward. If the recent trend holds, we project roughly 135 girls named Siobhan in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Who are famous people named Siobhan?

Well-known people named Siobhan include Siobhan Finneran (actor), Siobhan Fallon Hogan (actor), Siobhan Chamberlain (soccer player).

Names like Siobhan

Names that sound and feel close to Siobhan: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Siobhan with similar names → More names starting with S →